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Elsevier, Tetrahedron Letters, 52(49), p. 7372-7375

DOI: 10.1016/j.tetlet.2008.10.054

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Intramolecular C-H insertion using NHC-di-rhodium(II) complexes: the influence of axial coordination

Journal article published in 2008 by Luis F. R. Gomes, Alexandre F. Trindade ORCID, Nuno R. Candeias ORCID, Pedro M. P. Gois ORCID, Carlos A. M. Afonso
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This paper is available in a repository.

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Abstract

In this work we show that the intramolecular C-H insertion of diazo-acetamides catalysed by di-rhodium(II) complexes can be highly influenced by the axial ligand on the di-rhodium(II) complex. Axially monocoordinated NHC-Rh(2)(OAc)(4) complexes have a distinct reactivity from the parent Rh(2)(OAc)(4) complex affording the cyclisation products in different rates and selectivities. Surprisingly, a new reaction mode emerged when using these complexes which led to a decarbonylation pathway. (C) 2008 Elsevier Ltd. All rights reserved.